Bug FAQEuxoa auripennis
Euxoa auripennis · Order: Lepidoptera · Family: Noctuidae
Euxoa auripennis is a moth in the Noctuidae family, first described in 1974. Its wingspan measures about 30 to 34 mm. Adults fly in late summer, from August through September, and there is one generation each year.
Source: Wikipedia
Size
The moth’s wingspan ranges from 30 to 34 mm.
Source: Wikipedia
What it eats
The larvae feed on a variety of herbaceous plants at the soil surface.
Source: Wikipedia
Life cycle
There is a single generation each year.
Source: Wikipedia
When you see it
Adults are on the wing during August and September.
Source: Wikipedia
Where it comes from
Its native range covers the same western North American region described for its habitat.
Source: Wikipedia
Where it is found in the US
Recorded in 11 of 51 states and DC. Most records: Colorado, Montana, Oregon, New Mexico, Washington, Wyoming, Idaho, Arizona.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
Questions people ask
When can I see adult Euxoa auripennis?
Adults are active in late summer, specifically August and September.
Source: Wikipedia
How many generations does this moth have each year?
It produces one generation per year.
Source: Wikipedia
What do the caterpillars eat?
The larvae feed on various herbaceous plants at the soil surface.
Source: Wikipedia
Same family (Noctuidae)
Ipsilon Dart MothAgrotis ipsilonDamages trees, gardens or crops
Fall Armyworm MothSpodoptera frugiperdaDamages trees, gardens or crops
Army Cutworm MothEuxoa auxiliarisDamages trees, gardens or crops
Large Yellow UnderwingNoctua pronubaDamages trees, gardens or crops
Silver ΥAutographa gamma
American DaggerAcronicta americanaCan irritate skinSources
- Wikipedia: https://en.wikipedia.org/wiki/Euxoa_auripennis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-26 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-26.